EP0966218B1 - Element chauffant pour matelas a eau - Google Patents
Element chauffant pour matelas a eau Download PDFInfo
- Publication number
- EP0966218B1 EP0966218B1 EP98902290A EP98902290A EP0966218B1 EP 0966218 B1 EP0966218 B1 EP 0966218B1 EP 98902290 A EP98902290 A EP 98902290A EP 98902290 A EP98902290 A EP 98902290A EP 0966218 B1 EP0966218 B1 EP 0966218B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating element
- support plate
- bed
- water
- metal support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 48
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 23
- 239000004020 conductor Substances 0.000 claims abstract description 21
- 239000000615 nonconductor Substances 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000007650 screen-printing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C21/00—Attachments for beds, e.g. sheet holders, bed-cover holders; Ventilating, cooling or heating means in connection with bedsteads or mattresses
- A47C21/04—Devices for ventilating, cooling or heating
- A47C21/048—Devices for ventilating, cooling or heating for heating
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/08—Fluid mattresses or cushions
- A47C27/085—Fluid mattresses or cushions of liquid type, e.g. filled with water or gel
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/16—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being mounted on an insulating base
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
- H05B3/262—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an insulated metal plate
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
- H05B3/265—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an inorganic material, e.g. ceramic
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/32—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulators on a metallic frame
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
- H05B2203/003—Heaters using a particular layout for the resistive material or resistive elements using serpentine layout
Definitions
- the invention relates to a heating element for heating a water-bed, said heating element comprising a metal support plate with a high coefficient of thermal conductivity, a heat source attached to the metal support plate, said heat source comprising an electrically resistive conductor which emits heat when electricity passes through it, and an electrical insulator for insulating the heat source from the metal plate.
- European patent application EP-A-0,731,624 discloses a heating element for a water-bed of the sort as described above comprising a flexurally stiff metal support plate, on which a number of small ceramic heating plates are arranged with the aid of a thermally conductive adhesive. Electrical conductors are burnt into these small ceramic plates, which conductors serve as electrical resistance wire for generating heat. That surface of the support plate to which the small ceramic plates are attached is covered with an insulating plate of approximately the same dimensions as the support plate, and both plates are connected to one another in the region of the periphery in such a way that a space remains between the support plate and the insulating plate, in which the small ceramic plates are situated.
- the burnt-in electrical conductors are attached by burning in a pasty mixture of small particles of noble metals, such as gold and silver.
- This known heating element has various disadvantages. Small ceramic plates can easily break under flexural strain. If a small ceramic plate does break, the electrical conductor on the small plate is interrupted, with the result that the small plate will no longer be able to emit any heat. Thus in order to prevent the fragile small ceramic plates from breaking, the metal support plate to which these ceramic plates are attached has to have a high flexural stiffness, and to achieve this the support plate has to be relatively thick. However, the thicker the support plate, the more slowly the heat is transferred from the small ceramic plates, via the support plate, to the water of the water-bed. Another drawback is that the coefficient of expansion of the metal plate and the small ceramic plates is not identical. As a result, the metal plate will not expand to the same extent as the small ceramic plates when heated.
- each small ceramic heating plate has to be connected separately to the power supply. This is carried out here with the aid of a printed circuit board, which regulates the current to the various small ceramic plates.
- This known heating element thus comprises a very large number of components, so that its production costs are relatively high.
- the object of the invention is to provide a heating element for a water-bed, which heating element can easily be arranged in a water-bed and the heat transfer of which from the heat source itself to the water-bed is optimal, and which heating element, together with control means, is able to control and maintain the temperature of the water-bed within very narrow limits.
- the object of the invention is achieved by means of a heating element of the type described in the preamble by the fact that said electrical insulator for insulating the electrically resistive conductor from the metal plate is a layer of vitreous material with a very high electrical resistance is screen-printed on the metal support plate, and in that the electrically resistive conductor is screen-printed on this vitreous insulating layer.
- An electrical heating element of this kind according to the invention is extremely inexpensive by comparison with the known heating elements, and because the heat only has to pass through a pair of very thin layers, and hence also only a small number of changes of material, the heat will be given off to the water-bed very quickly when the heating element is switched on and off, and consequently it will be possible to control the heat extremely quickly within narrow temperature limits. As a result, the power consumption will also be lower while nevertheless generating sufficient heat.
- the structure of a heating element according to the invention is also considerably more simple and easier to attach than with the heating elements known to date. Due to the fact that the intermediate layer comprises a very thin insulating layer which is easy to apply and adheres directly to the support plate, the heat transfer is very rapid and hence efficient.
- the materials from which respectively the metal support plate, the thin intermediate layer, the conductors and the protective thin layer are made have essentially the same coefficient of thermal expansion.
- the intermediate layer with the electrically resistive conductors can be arranged over the entire width of the support plate without there being any risk of stresses being produced between the various layers as the temperature changes, which could cause the layers to become detached from one another.
- FIG. 1 shows the underside of a heating element 1 according to the invention.
- the heating element 1 comprises a support plate 2 made of, for example, stainless steel, on which a vitreous insulating layer 3 is arranged by means of a screen-printing process.
- This insulating layer 3 has good electrically insulating properties, while conducting heat well, and serves as an electrically insulating thin intermediate layer 3.
- An electrically resistive conductor 4 is arranged on top of the insulating layer 3.
- This electrically resistive conductor 4 consists of a metal and is applied to the insulating layer 3 by means of a screen-printing process.
- the underside of the plate is covered by an electrically insulating thin cover layer 5, with the result that the electrically resistive conductor 4 is electrically insulated on all sides from the surroundings (cf. Figure 3).
- the electrical heating element is closed off on the underside by means of a plastic tray 6, and these two components are connected together in the region of the edges, so that the electrical connection points are insulated from the surroundings.
- the electrically resistive conductor 4 comprises a virtually flat track which runs in the form of a zig-zag over the underside of the heating element 1, without in the process crossing itself.
- the two ends of the electrically resistive conductor 4 are each connected to electrical contact elements 7, which serve to attach the wiring which connects the electrically resistive conductor 4 to an electric power supply, which is not shown here.
- a thermal fuse 8 is connected in series with the heating element, interrupting the circuit if the heating element becomes too hot.
- FIG. 2 shows a cross-section of a water-bed 9, comprising a base 10, on which a pit-like part or bed frame 11 is placed, with a pit-like recess 12, in which a water pocket or water core 13 is laid, comprising a flexible casing 14 filled with water 15.
- a protective sheet 16 is arranged between the water core 13 and the bed frame 11.
- a cover 17 is arranged around the whole of the bed frame 11 and the water core 13.
- a heating element 1 according to the invention is arranged between the bed frame 11 and the protective sheet 16, approximately in the centre. This heating element 1 can be connected to the electricity mains using a standard plug 18 and wiring 19.
- a control mechanism 20 can be used to set the heating element 1 to a desired temperature, after which the temperature of the water-bed will be controlled within a defined temperature range.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Surface Heating Bodies (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Resistance Heating (AREA)
- Road Paving Structures (AREA)
Claims (6)
- Élément chauffant (1) pour chauffer un matelas d'eau (9), ledit élément chauffant (1) comprenant une plaque de support métallique (2) ayant un coefficient de conductivité thermique élevé, une source de chaleur (4) fixée à la plaque de support métallique (2), ladite source de chaleur (4) comprenant un conducteur électriquement résistif qui émet la chaleur lorsque l'électricité passe par celui-ci, et un isolateur électrique (3) pour isoler la source de chaleur (4) de la plaque métallique (2), caractérisé en ce que, ledit isolateur électrique (3) pour isoler le conducteur électriquement résistif (4) de la plaque métallique (2) est une couche (3) d'un matériau vitreux présentant une résistance électrique très élevée et sérigraphiée sur la plaque de support métallique (2), et en ce que le conducteur électriquement résistif (4) est sérigraphié sur cette couche isolante vitreuse (4).
- Élément chauffant (1) selon la revendication 1, caractérisé en ce que, le côté du conducteur électriquement résistif (4) opposée à la plaque de support métallique (2) est recouvert d'une couche de couverture mince électriquement protectrice (5) qui présente une résistance électrique très élevée.
- Élément chauffant (1) selon la revendication 2, caractérisé en ce que les matériaux à partir desquels respectivement la plaque de support métallique (2), la couche isolante vitreuse (3), le conducteur (4) et la couche mince protectrice (5) sont constitués possèdent essentiellement le même coefficient de dilatation thermique.
- Élément chauffant (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la couche isolante vitreuse (3) présente une épaisseur située entre 0,4 et 1 mm.
- Élément chauffant (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'isolateur électrique (3) présente une capacité de conduction thermique élevée.
- Matelas d'eau (9) comprenant un élément chauffant (1) selon l'une quelconque des revendications précédentes.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1005321A NL1005321C2 (nl) | 1997-02-20 | 1997-02-20 | Verwarmingselement voor een waterbed. |
NL1005321 | 1997-02-20 | ||
PCT/NL1998/000067 WO1998036664A1 (fr) | 1997-02-20 | 1998-02-03 | Element chauffant pour matelas a eau |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0966218A1 EP0966218A1 (fr) | 1999-12-29 |
EP0966218B1 true EP0966218B1 (fr) | 2001-10-24 |
Family
ID=19764456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98902290A Expired - Lifetime EP0966218B1 (fr) | 1997-02-20 | 1998-02-03 | Element chauffant pour matelas a eau |
Country Status (8)
Country | Link |
---|---|
US (1) | US6150633A (fr) |
EP (1) | EP0966218B1 (fr) |
AT (1) | ATE207322T1 (fr) |
AU (1) | AU5884998A (fr) |
CA (1) | CA2282327A1 (fr) |
DE (1) | DE69802170D1 (fr) |
NL (1) | NL1005321C2 (fr) |
WO (1) | WO1998036664A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4355026A1 (fr) * | 2022-10-13 | 2024-04-17 | Borgwarner Emissions Systems Spain, S.L.U. | Plaque chauffante |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10017816C2 (de) | 2000-04-10 | 2002-11-14 | Vontana Ind Gmbh & Co Kg | Heizungsvorrichtung mit elektrischen Heizelementen für Wasserbetten |
US20050045620A1 (en) * | 2003-08-29 | 2005-03-03 | Huang Chen-Lung | Electric heater |
FR2963868B1 (fr) * | 2010-08-11 | 2012-09-28 | Valeo Systemes Thermiques | Echangeur de chaleur comprenant un element chauffant serigraphie |
DE202013003828U1 (de) | 2013-04-23 | 2013-05-14 | Sbi Polska Sp. Z O.O. | Wasserbettenheizung mit Fernsteuerung |
DE102015002478A1 (de) | 2015-02-26 | 2016-09-01 | Vontana Industrie Gmbh & Co. Kg | Heizvorrichtung für Wasserbetten |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3627981A (en) * | 1968-11-09 | 1971-12-14 | Kabel Metallwerke Ghh | Areal heating element |
GB8304863D0 (en) * | 1983-02-22 | 1983-03-23 | Carbolite Furnaces Ltd | Heating panels |
US4661689A (en) * | 1985-10-28 | 1987-04-28 | Collins & Aikman Corporation | Electrical heating pad with antistatic surface |
US4798936A (en) * | 1986-08-14 | 1989-01-17 | Johnson Sr Arthur K | Waterbed heater |
FI80828C (fi) * | 1988-04-08 | 1990-08-10 | Piscina Oy | Anordning foer vaermning av en vattenbaedd. |
-
1997
- 1997-02-20 NL NL1005321A patent/NL1005321C2/nl not_active IP Right Cessation
-
1998
- 1998-02-03 CA CA002282327A patent/CA2282327A1/fr not_active Abandoned
- 1998-02-03 WO PCT/NL1998/000067 patent/WO1998036664A1/fr active IP Right Grant
- 1998-02-03 US US09/367,134 patent/US6150633A/en not_active Expired - Fee Related
- 1998-02-03 AT AT98902290T patent/ATE207322T1/de not_active IP Right Cessation
- 1998-02-03 AU AU58849/98A patent/AU5884998A/en not_active Abandoned
- 1998-02-03 EP EP98902290A patent/EP0966218B1/fr not_active Expired - Lifetime
- 1998-02-03 DE DE69802170T patent/DE69802170D1/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4355026A1 (fr) * | 2022-10-13 | 2024-04-17 | Borgwarner Emissions Systems Spain, S.L.U. | Plaque chauffante |
Also Published As
Publication number | Publication date |
---|---|
EP0966218A1 (fr) | 1999-12-29 |
DE69802170D1 (de) | 2001-11-29 |
NL1005321C2 (nl) | 1998-08-24 |
AU5884998A (en) | 1998-09-09 |
CA2282327A1 (fr) | 1998-08-27 |
WO1998036664A1 (fr) | 1998-08-27 |
ATE207322T1 (de) | 2001-11-15 |
US6150633A (en) | 2000-11-21 |
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